245807744131 has 2 divisors, whose sum is σ = 245807744132. Its totient is φ = 245807744130.

The previous prime is 245807744099. The next prime is 245807744191. The reversal of 245807744131 is 131447708542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245807744131 - 2⁵ = 245807744099 is a prime.

It is a super-2 number, since 2×245807744131² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245807744191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122903872065 + 122903872066.

It is an arithmetic number, because the mean of its divisors is an integer number (122903872066).

Almost surely, 2^245807744131 is an apocalyptic number.

245807744131 is a deficient number, since it is larger than the sum of its proper divisors (1).

245807744131 is an equidigital number, since it uses as much as digits as its factorization.

245807744131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 752640, while the sum is 46.

The spelling of 245807744131 in words is "two hundred forty-five billion, eight hundred seven million, seven hundred forty-four thousand, one hundred thirty-one".